Feed foot for a rib applying machine



Sept. 6, 1966 J. R. HUBBARD FEED FOOT FOR A RIB APPLYING MACHINE 2 Sheets-Sheet 1 Filed June 11, 1965 FIG. 3

FIG. 4

INVENTOR 7W V WM I 1 Sept. 6, 1966 HUBBARD 3,270,356

FEED FOOT FOR A RIB APPLYING MACHINE Filed June 11, 1965 I 2 Sheets-Sheet 2 INVENTOR 6 KWMZZ United States Patent 3,270,356 FEED FOOT FOR A RIB APlLYING MACHINE John R. Hubbard, Saugus, Mass., assignor to Prime Manufacturing Company, Lynn, Mass, a corporation of Massachusetts Filed June 11, 1965, Ser. No. 463,172 4 Claims. (Cl. 1220) This invention relates to machines for applying sewing ribs to unchanneled insoles for use in the manufacture of Goodyear Welt shoes. It comprises a new and improved feed foot which facilitates the presentation and formation of an attaching rib at a pronounced inwardly inclined angle.

Shoe manufacturers are now interested in the inclined rib formation because it facilitates flat lasting which is now in vogue and in which it is desired to apply the rib in the position most favorable for folding it down and inwardly with the lasting margin of the upper. In some instances the rib is cemented to the surface of the insole or the inturned flange of the rib stripping and in other cases it remains at an acute angle. The upper is thus tightly lasted and the amount of required bottom filler is reduced.

With these objects in view a feature of the invention consists in a feed foot having a downwardly extending end portion with flange-engaging pads separated by a rib receiving slot inclined sharply and inwardly with respect to the plane of the flange-engaging pads.

Another feature of the invention consists in a feed foot having a laterally extending crease finder which is adapted to extend beneath the inclined rib and define the desired fold line between it and the inwardly directed attaching flange of the rib.

Other features of my invention consist in the provision of a pressure pad for engaging the outside attaching flange of the ribbing and assuring its adhesive union with the surface of the insole. With this is associated an improved slitting knife for pinking or slashing the outside flange of the rib and thus facilitating the formation of the convex curvature of the stripping desired at the toe of the insole.

These and other features of the invention will be best understood and appreciated from the following description of preferred embodiments thereof selected for purposes of illustration and shown in the accompanying drawings in which:

FIGS. 1 and 2 are views in perspective of what we may term an outside feed foot,

FIG. 3 is a view in elevation thereof showing a part of the insole and rib,

FIG. 4 is a view in front elevation,

FIGS. 5 and 6 are views in perspective of what we may term the inside feed foot,

FIGS. 7 and 8 are views in elevation from opposite sides of the same, and

FIG. 9 is a diagrammatic view showing the inside feed foot in relation to an insole.

The feed feet herein shown are constructed and arranged to operate in a rib applying machine of the type described in United States Letters Patent 2,657,405 November 3, 1953, Ridderstrom. As fully described therein the feed feet are activated by double eccentrics to move one after the other in engaging rib stripping in its area of contact with an insole and continuously to advance the insole and stripping as the stripping is applied to the margin of the insole.

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The term inner and outer as used herein will refer to the insole, the stripping having an outer attaching flange that extends to the outer edge of the outso'le, an inter mediate upstanding rib and an inwardly extending attaching flange. The feed foot shown in FIGS. 1-4 has an elon-- gated body 10 of substantially rectangular cross section with bolt holes 11 by which it is secured to an eccentrically operated arm. The body 10 is shouldered to define an intermediate section 12 and a terminal section 13 which is provided with a downwardly directed pad 14 for engaging the outside flange of the stripping.

The intermediate section 12 of the foot is flared outwardly and downwardly inclined to meet the end wall 16 of the terminal section 13. This wall merges into an inwardly extending transverse pad 16 which is arranged to engage the inner flange of the stripping and is provided with a rib-receiving slot 17 which is inclined laterally at an angle of 30 or 40 and designed to receive the upstanding rib and hold it at an inwardly inclined angle as it is presented and adhered to the insole.

The terminal section 13 has a cylindrical passage for a knife 18 which projects slightly beyond the pad 14 and is effective in slashing or pinking the outer attaching flange of the stripping as it is progressively applied to the insole. The knife 18 is held within its passage by a transverse clamping screw 19 and adjustably locked in position by a screw 20 threaded into the intermediate section of the foot in position to bear against the convex surface of the knife.

In the drawings the rib stripping is shown as being adhesively applied to the margin of a flat insole 25. The outer attaching flange 27 is disposed flush with the edge of the insole throughout its forepart and offset inwardly throughout the shank. The upstanding two-ply rib 26 is shown as retained at an inwardly inclined angle by the slot 17 of the outer feed foot, and the inner attaching flange 28 extends inwardly from its fold vertex with the rib 26.

The inner feed foot, as shown in FIGS. '5 to 9 comprises an elongated body 30 of rectangular cross section with bolt holes 31 and a shoulder defining an intermediate section 32. This merges transversely and outwardly into an inclined presser shoe or pad 34 arranged to engage the outer flange 27 of the rib stripping and press it into adhesive union with the insole as shown in FIG. 9.

The section 32 also merges inwardly into an arm 35 having a serrated work-feeding pad for engaging the inner attaching flange 28 of the rib stripping to press it into adhesive contact with the surface of the insole and then to advance the combined insole and stripping.

A crease-finding tool in the shape of a pointed blunt horn or blade 33 projects transversely and outwardly from the arm 35 in position to enter beneath the inclined rib 26 and to find the fold vertex between the inner flange 28 and the rib 26. This tool acts as a gauge to insure the most favorable position of the feed foot in respect to the underlying rib stripping. For example, it insures that the feeding pad of the arm 35 shall be located widthvwise of the shoe for proper engagement with the inner attaching flange 28. It also insures accurate 'control of the strip ribbing as the latter is conducted to the surface of the insole.

Having thus disclosed my invention what I claim as new and desire to secure by Letters Patent is:

1. A feed foot for rib-laying machines, comprising an elongated body of substantially rectangular cross section terminating at its outer end in an outwardly flaring flange which is downwardly inclined from the upper surface of the body and merges into a transversely disposed downturned flange'engaging pad, a rectangular flange-engaging pad carried by the body of the foot and separated from said transversely disposed pad by a slot inclined inwardly with respect to the plane of contact of the rectangular pad and located in advance of said flange-engaging pad, and a transversely extending blade in position to find and contact the fold vertex of the rib as determined'by the inclined slot of the foot.

2. A feed foot for a rib applying machine, comprising an elongated body merging into downwardly directed pads separated by an inclined slot for engaging the inner and outer attaching flanges of strip ribbing as applied to an insole and a crease-finding blade spaced in advance of one of said pads and arranged to enter transversely into the inclined rib and follow the [inner fold vertex formed between an upwardly inclined port-ion of the rib and the inside attaching flange.

3. A feed foot for a rib applying machine, having spaced flange-pressing members separated by an inclined rib-receiving slot, and an intermediate crease-finding blade spaced in advance of one of said members and extending transversely beneath an inwardly inclined rib of ribstripping as applied to an insole, in position to guide the 25 feed foot by contact with the fold vertex between the inner attaching flange and the inclined rib.

4. A feed foot for a rib applying machine, having an elongated body with an outwardly projecting pad at its end for pressing the outside attaching flange of rib stripping as applied to an insole, an inwardly projecting pad for pressing its inner attaching flange, and a creasefinding blade spaced in advance of one of said projecting pads and lying in substantially the effective plane of contact of said pads and between them and extending transversely beneath a rib applied at an inward inclination.

References Cited by the Examiner UNITED STATES PATENTS 2,142,332 1/ 1939 Ridderstrom l220 2,427,240 9/ 1947 Vachon 1220 2,573,683 11/1951 Bertrand 1220 2,594,470 4/1952 Mariner 1220 2,706,824 4/ 1955 Ridderstrom 1220 FOREIGN PATENTS 835,018 5/1960 Great Britain.

JORDAN FRANKLIN, Primary Examiner. PATRICK D. LAWSON, Examiner. 

1. A FEED FOOT FOR RIB-LAYING MACHINES, COMPRISING AN ELONGATED BODY OF SUBSTANTIALLY RECTANGULAR CROSS SECTION TERMINATING AT ITS OUTER END IN AN OUTWARDLY FLARING FLANGE WHICH IS DOWNWARDLY INCLINED FROM THE UPPER SURFACE OF THE BODY AND MERGES INTO A TRANSVERSELY DISPOSED DOWNTURNED FLANGE-ENGAGING PAD, A RECTANGULAR FLANGE-ENGAGING PAD CARRIED BY THE BODY OF THE FOOT AND SEPARATED FROM SAID TRANSVERSELY DISPOSED PAD BY A SLOT INCLINED INWARDLY 